A monitoring/control system (101) for monitoring and controlling an air-conditioning system (1), wherein a communication terminal (2) is equipped with an air-conditioning network connection unit (22) that executes communication between air conditioners (4-1 – 4-n) and receives from the air conditioners (4-1 – 4-n) configuration information that includes identification information and model information for the air conditioners (4-1 – 4-n), a wide-area network connection unit (27) that transmits the configuration information to a server (3) and receives a trial operation sequence from the server (3), and a sequence execution unit (23) that transmits commands to the air conditioners (4-1 – 4-n) via the air-conditioning network connection unit (22) on the basis of the trial operation sequence, and the server (3) is equipped with a wide-area network connection unit (31) that receives the configuration information from the communication terminal (2) and transmits the trial operation sequence to the communication terminal (2), and a trial operation sequence generation unit (34) that generates a trial operation sequence on the basis of the configuration information.